Albert Barnes Commentary Judges 1:17

"And Judah went with Simeon his brother, and they smote the Canaanites that inhabited Zephath, and utterly destroyed it. And the name of the city was called Hormah." — Judges 1:17 (ASV)

Hormah - See Numbers 21:1 note. The destruction then vowed was now accomplished. This is another decisive indication that the events here related belong to Joshua’s lifetime. This would be about six years after the vow.